Are you tired of Ralphie boy trying to take a chunk out of you every time you need to cut his hair? Is a muzzle the first thing you reach for when it's time for a monthly trim? Or have you simply given up on being able to cut his hair and started paying for a professional groomer to do the job for you? While this type of behavior may be common in many breeds, it is no way acceptable. To start out, you need to try and find out why Ralphie feels the way he does about grooming. Only then can you move on to training him not to act this way.
You might not know it, but Ralphie has a much better memory than most people give him credit for. If at any time Ralphie has been mistreated by a groomer, this would be enough to cause him significant anxiety when he sees you with the clippers or shears in your hands.
Teaching Ralphie to relax at grooming time and stop biting everyone can take a little time. The trick, is that you need to be patient with him and to a certain extent, let him set the pace. Be sure to praise him and give him some of his favorite treats to let him know he is doing a great job.